| TRA-2297HD | Rear Single Axle; Model 102CC suspension | 3 | 21 3/8 | 21 3/8 | 2 ½ | 10 | 10/499 | 5 | 14500 | |
| TRA-2297HD | Trailer Leaf Spring Suspensions; Model 21B thru 21F, 25, 83 and 90 suspensions; 7 or more leaf springs | 3 | 21 3/8 | 21 3/8 | 2 ½ | 10 | 10/499 | 5 | 14500 | |
| TRA-2297HD | Trailer Leaf Spring Suspensions; Model 91 suspension | 3 | 21 3/8 | 21 3/8 | 2 ½ | 10 | 10/499 | 5 | 14500 | |
| TRA-3340HD | Transpro Trailer Leaf Spring Suspensions - 1, 2 or 3 leaf springs | 3 | 21 3/16 | 24 ¼ | 4 13/16 | 4 | 4/788 | 3 5/16 | 14000 | Commonly used on Pitt's trailer |